Siemens 3SU1851-0ND00-2AC2

Enclosure for command devices, 22 mm, round, Enclosure material metal, Enclosure top part yellow, with protective collar, 1 control point metal, A=EMERGENCY STOP mushroom pushbutton red, 40 mm, rotate-to-unlatch, 1 NO, 1 NC, 1 NC, screw terminal, floor mounting, 1xM20 each on top and bottom